Burner



1 Aug. 17,1926.

G. D. SUNDSTRAND BURNER Original Filed April 5. 1920 'GUSTAE ravin sUNDsraANn, or fnocarcan,Qimmers,k rnssioivon, BY Masiva/VAS?, sIGNMnNTs, 'ro `nocrzrrmn Aroot contrarier; .on moeizaam), .-ILLINoIs, Anconromi Patented Aug. i7, 1926.

'rIoN OFILLINoIs,

origiai epplnauon nieu Aprufsfiezo, seriai No. 371,43@ mvide'rami.uug-'pueation yfil-'d1 Febiuary',

, s, 192e. seriaifivajelvs? i, invention relates to liquid fuelv burners and Y more particularly to an improved burner especially adapted for use'with heatmy copendingVv application, "Serial tion is a' division.- y YOne oftheobjectsoflmy invention 1s to provide an improved burner for the use of liquidA fuelsuch as kerosene or the like. In

heaters of the general type shown in the above l mentioned application, and frag-` mentarily shown in the AVdrawing forming part of this application, it is highly desirable ,that the radiating `surface 'be uni'- foi'rnly heated.' yliiurn'ersfas heretofore vcon-4 structed have rfailed to "satisfactorily heat .theentire radiating surface .of the vheaters v or istoves uniformly, and another object of the invention is Ato provide a liquid fuel burner which may if desired be made to produce a flame substantially covering the inner surface of the heater. g. f j

A further object is to provide a liquid fuel burner which has an initial concentrated iiame impinging on the vessel containing the liquid fuel so that the fuel isvolatilized before combustion occ-urs, and havingthe wall of the containing vessel Vshaped so that the impinging flame is deflected laterally for uniform 4distribution overtheradiating surface of the heater in which the burner is mounted. l

Further objects and advantages of inyinvention'will become apparent as the description proceeds. s

In theac'companying drawing, Figure 1 I is a vertical sectional view of a burner elnbodying the principles of my invention, the

' burner beingshown mounted in a heater whose walls are partially broken away so as to more clearly disclose the heater. Fig. 2 is a plan view of the burner, and Fig. 3 is an Y tionednearvf a circular stove' .1 only ai fragmentary jportion 'of vvthestove b'e comprises a drip pank 5 'and lajdu/ct `'6 which'terminatesin an'k 11p-fY WardIyeXtending nozzle or-orifce 7. f The upper andlo'werportions ofthe'burner are.

in substantially verticalalinement with the orificeY 7r positionedapprox'imately beneath',-

the `c'enter' ofthe upper portion. v'The orifice illustrated as comprisingjan upwardly` directed 'tube '8 and a nipple -9`having an aperturel() .formed Vtherein 'to provide Vvan Qui-let' for the liquidnndfgaseoli's fuel coming from the.' ilpperpor'tion through' the :tubular f inemb er .3.

A The 'upperportion "l'comprises -a closed evaporating panllljhaving yanfupper wally 12 70 and an inwardly "concaved bottom .13 of'ap-sy proximatelylsphericalshape. The concaved bottom'por'tion V13 is 'provided with a rim( orretaining wall 14 which extends to a level slightly higher than the highest portion of the bottom. A duet 15 is formed by providing an upwardly projecting rib 16 .in the upper wall 12.' The outer end of the duct 15 emerges into a downwardly directed tubular member 17 which serves as an outlet for liquid fuel overflowing the Vwall 14;,as well as an outlet for the gas which is generated by evaporation of the `liquid fuel contained in 'Y the pan V11.l The gasv and overflow fuel reach' ther-duct Gand oriiice 7 through the tubular member 3.

A supplytubelS is adapted to supportl the burnery in the stove 4t and to deliver liquid fuel. to the pan 11'` from a supply (not shown). The tube 18 `is vpreferably Vslightly inclined upwardly toward the pan 11 to prevent escape of Y'the volatilized fuel in the form of bubbles through the tube 18.V

The flow-of liquid fuel through the vtube r18 rmay' be regulated` by providing valves (not shown) in the tube 18. 7

20, respectively, which may be removed if desired to vclean the ducts.

The operation.4 of my device is asV -follows With the burner mounted on the supply tube 18,-as shown, liquidl fuel is permitted to flow into and overflow theevapo- Y AperturesY in the outer ends of. ducts 6'( yand 15 are normally closed by vplugs 19 and volatilized by thetlame and overflow from" the evaporating pan ceases and yet is supplied rapidly enough to keep the bottom of theV pan covered. The llame which is' concentrated on' the bottom of the pan is of sufficient intensity to melt the bottom of the pan in a short time unless covered by the liquid. The operation isv terminated' by merely shutting` off the oil supply. The liquidreinaining in the shallow pan is all `volatilized and the resulting 'gas consumed before thepan is sufficiently heated to cause it to melt or beotherwise damaged. rfhe high intensity of the concentrated flame causes it to spread out laterally and rise in 'a cylinder like form adjace'nt'to. the inner surface of the stove thereby lheating the radiating surface of the stove substantially uniformly. The spherical shape of vthe bot- `tom of the evaporating pan causes the llame to leave the'pan in a slightly downward direction thereby causingA the flame to spread laterally` morethan if'it left thepa'n in a' vskilled in the art.

horizontal or an upwardly inclined direction.

lVhile l have illustrated and described in detail the preferred embodiment of my invention, it should be clearly understood that the disclosure is merelyfortpnrposes of illustration and that many modifications-and 40 variations will naturally occur to Qthose I aim in the subjonedV claim to cover all such legitimate variations and inodifications.V l 'i* l claim as my invention:

A. fuel cil burner of the class rdescribed having, in combination, a; fuel Adischarge orifice opening upwardly, 'a' drip pan surrounding said orifice, a closed evapoiatiiig pan having an upwardly convex bottomv po- 50 sitioiied directly above said orice,an oil supply tube connected to the upper portion of said evaporating pan, a gasandiliquid; fuel conveying duct joining said orifice andI said evaporating pan, said evaporating pan. 554

having'V an internal' upstanding retaining wall over which'liquid andv gas must pass to reach said conveying duct, the highest level of said retaining wall lying in a hori- Irental plane intermediate said supply tube 60,

Vex bottom. f

In testimony whereof, l have hereunto aflixed my signature.

and the highest point of said upwardly con- Gnsraii Diivin sUNDsTRiiNn. j 

